Update the appengine code to use OAuth2 and break the gdata dependency.

remoting/client/appengine/static_files/client.js

Index: remoting/client/appengine/static_files/client.js
diff --git a/remoting/client/appengine/static_files/client.js b/remoting/client/appengine/static_files/client.js
index b485467097ecd1946e5734ca0e71af074d944efa..584ea6e86ff0f259a3f837e3db6e9326905e03e7 100644
--- a/remoting/client/appengine/static_files/client.js
+++ b/remoting/client/appengine/static_files/client.js
@@ -190,8 +190,9 @@ function addHostInfo(host) {
     connect.setAttribute('type', 'button');
     connect.setAttribute('value', 'Connect');
     connect.setAttribute('onclick', "window.open('session?hostname=" +
-        encodeURIComponent(host.hostName) + "&hostjid=" +
-        encodeURIComponent(host.jabberId) + "');");
+        encodeURIComponent(host.hostName) +
+        "&hostjid=" + encodeURIComponent(host.jabberId) +
+        "');");
     span.appendChild(connect);
 
     var connectSandboxed = document.createElement('input');
@@ -200,6 +201,8 @@ function addHostInfo(host) {
     connectSandboxed.setAttribute('onclick',
         "window.open('session?hostname=" + encodeURIComponent(host.hostName) +
         "&hostjid=" + encodeURIComponent(host.jabberId) +
+        "&http_xmpp_proxy=" + encodeURIComponent(
+            document.getElementById('http_xmpp_proxy').value) +
         "&connect_method=sandboxed');");
     span.appendChild(connectSandboxed);
 
@@ -227,3 +230,39 @@ function addHostInfo(host) {
 
   return hostEntry;
 }
+
+function updateAuthStatus_() {
+  var oauth2_status = document.getElementById('oauth2_status');
+  if (chromoting.oauth2.isAuthenticated()) {
+    oauth2_status.innerText = 'Tokens Good';
+    oauth2_status.style.color = 'green';
+    document.getElementById('oauth2_authorize_button').style.display = 'none';
+    document.getElementById('oauth2_clear_button').style.display = 'inline';
+    populateHostList();
+  } else {
+    oauth2_status.innerText = 'No Tokens';
+    oauth2_status.style.color = 'red';
+    document.getElementById('oauth2_authorize_button').style.display = 'inline';
+    document.getElementById('oauth2_clear_button').style.display = 'none';
+  }
+}
+
+function clearOAuth2() {
+  chromoting.oauth2.clear();
+  updateAuthStatus_();
+}
+
+function authorizeOAuth2() {
+  var oauth_code_url = 'https://accounts.google.com/o/oauth2/auth?'
+      + 'client_id=' + encodeURIComponent(
+          '440925447803-d9u05st5jjm3gbe865l0jeaujqfrufrn.' +
+          'apps.googleusercontent.com')
+      + '&redirect_uri=' + window.location.origin + '/auth/oauth2_return'
+      + '&scope=' + encodeURIComponent(
+          'https://www.googleapis.com/auth/chromoting ' +
+          'https://www.googleapis.com/auth/googletalk')
+      + '&state=' + encodeURIComponent(window.location.href)
+      + '&response_type=code';
+  window.location.replace(oauth_code_url);
+}
+